Signaling system.



G. CROSBY.

SIGNALING SYSTEM. APPLICATION FILD lULY 1.2,.1910.

Patented Feb.8,1916.

2 SHEETS-SHEET 2.

wit we o vconnaivi cnosBY, or NEW-Yoan, Y.

sIeirAiINe s Ys'rEM.

,To alt/'whom t may concern.'

Be it known that I, GORHAM CROSBY, a citizen of the UnitedStates, and a resident ofNew York city, in the county of New-' York and State of New York,`have invented certain new and useful Improvements' iny Signaling Systems, of which the following is a specification.

My invention relates to improvementsin signaling systems designed to control4 the running of elevators, or similarv cars, to vini sure their systematic operation.A

One object ofmy invention is'to provide such a system in 'which the elevators or cars may continuously run with "as little delay as possible, so that they maybe sub- 'stantially as systematically'controlled as if controlled by a separate operator, usually called a starter.

A further object of my invention is to provide means .whereby the persons'operating the elevators may be suitably signaled and whereby such signals will v'be repeated intermittently until the signal has been obeyed. v

A further object of my invention is to or person provide an arrangement which is readily adjustable to suit any number of elevators, or cars, which may be running and to suit various heights or distances to which they may be designed to travel. l

Further objects, features and advantages will more clearly appear Vfrom the detailed description given below, taken in` connection with the accompanying drawingswhich show diagrammatically a system embodying one form of my improvements.

In the drawings, `Figure 1 is a diagram showing in ageneral way one form of my invention. Fig. 2 is a diagram showing in V detail the connections and switch arrange-v ments in the various elevators or cars, shown in Fig. 1.

Referring to Fig. 1, A, B and C represent three elevator shafts extending bythe floors 1, 2, 3,4, 5, 6, 7, 8 and 9. In the shafts A,

B and C are arranged the elevators 10, 11 7 and 12 respectively.

Atthe bottom \of the shafts A, B and C. are provided 'electrical contact plates 13, 14and'15, arranged to contact with the electrical contact plates 16, 17 and 18 of the elevators 10, 11 and 12 respectively, when said elevators are at the bottom of their shafts.

As shown in Fig. 1, the elevator \10- 1s at the bottom of its shaft and 'the contact I Application led'iJuly 12, 1910. S'rial No. 571,551.

nection.

Specification of Letters Patent. i i i]? ai; g]i3je|1 Feb.v 8, 1916i. l

plates 13 and 16 are shown in electrical con- Y The elevator 11 is shown partl way up its shaft,'while theelevator 12 is shown to be at the top of its shaft. Spaced along the length of each vshaft `and pref-l erably corresponding to the various floors orstations, are contact plates 19, 20, 21, 22, 2 3, 24 and 25 in the shaft A; contact plates 26, 27, 28,29, 30, 31, 32, in the shaft B, and Contactl plates 33, 34, 35, 36,37, 38 and 39 in thek shaft C; The elevator 10`is .pro-

. vided with a `Contact ,plate- 40, arranged to contact withI the contact plates 19- to 25 in- I elusive, as it passes up and down its shaft.

`The` elevator 11 is provided with a contact plate41, arranged to contact with contact plates 26 to.32 inclusive, as it passes up and down its shaft. The elevator 12 isiprovided with a Contact plate. 42 varranged to contact with `contact plates 33 to 39 inclusive, as it passes up and down its shaft. Situated in the elevators 10, 11 and 12 are signals 43, 44 and 45 respectively. `These signals may be in the form of electric bells, electric livhts, or-other suitable forms and they are e ectrically-connected with the contact -plates ,-16, 17 and 18 respectively, by `means of conductors 46. rI he other terminal of each signal 43, 44 and 45 is electrically connected with ground by means of conductors 47 in any well known manner.

48 represents a storage battery or other suitable source of electrical energy, one terminal of which is connected with ground by a conductor 49, which ground is the same as that -to which the conductors 47 are connected.' The other terminal, of the battery 48 is connected to conductors 50, 51 and 52.

Conductor 50 extends into the elevator 10.

and is arranged to be connected to the conductor 53 by means of suitable switching mechanism hereafter to bey described. In

a similar manner, conductor 51 extends into the elevator 11 andis' arranged to .be connected to tlieconductor 54 by similar switchingmechanism. In a similar manner, the

conductor 52 extends into the elevator 12 and is arranged to be connected to the conductor I55 by means of similar switching mechanism. f,

The contact plates 19 to. 24 inclusive, are.

connected to suitable switch contacts 56, 57, 58, 59,' 60 vand 61 respectively, by suitable lconductors as shown. The contact plate 25 is connected to a'suitable switch member 62 by means of conductors 63 and 64. In a similar manner the contact plates 2 6 to 31 inclusiveare suitably connected Jto switch members 65, and the contact-plates 33 to 38 inclusive are suitably connected to switch members66. Likewise, the contact plate 32 is electrically connected to switch member 67, and the contact plate 39 is electrically connected to switch member 68.. Each of the contact plates,- 25', 32 and 39 are also electrically connected together and with the switching members 62, 67 and 68 by means of conductors 63, 69,70 and 71.

Assuming that the conductor 50 is connected to conductor 53; conductor 51 is connected to conductor 54 and conductor 52 is connected to conductor 55, the operation is substantially as follows: The elevator 10 being at the bottom of the shaft and the elevator 11 descending, when theelevator 11 has reached the point shown, contact plates 41 and 29 are in electrical engagement. Thiscompletes an electrical circuit through the signal 43, as follows: ground at 49, battery 48, conductor 51,- conductor 54, Contact plates 41, 29, corresponding switch member 65, switch member 67, conductor 70, contact' plates 13, 16, conductor `46, signal 43 and conductor 47 back to ground. If the elevator or car 10 is then moved upwardly as desired, the controlling or signal circuit through signal 43 will be broken by the separation of contact plates 13 and 16. If, however, the signal should not be obeyed, then the car 11, upon further descending will cause lthe contact plates 41 and 30 to be brought into electrical engagement, thus repeating the signal in exactly the same manner. This repetition continues at each iooi" passed until the elevator 11 has reached the bottom or starting point of its line of travel. lf, however, the elevator 10 starts upwardly, as desired,- at the irst signal, then the elevator 11, in descending and passing contact lplates 30, 31 and 32 does not operate any signal because there is no car at its starting point to be signaled. Assuming that the car 10 has moved upwardly and that the car 11 has reached the bottom or starting point, then the car 12 in descending will pass the various contacts 33 to 39 inclusive. Upon reaching the contact 36 it will signal the car 11 to start upwardly, the circuits being as follows: ground 49, battery 48, conductor 52, conductor 55, contact .plate 42, contact plate 36, corresponding switch member 66, switch member 68, conductor 70, contact plate 14,'contact plate 17, conductor 46, sig# nal 44 and conductor 47 back to ground. In a similar manner it will be seen that in descending or returning any elevator or can` will signal any car which is at the starting point to start upwardly or along its route. If there be no car at the starting point, no such signal would be given and upon any such signal being given the signal will be connected with the switch members 56 to 61 inclusive, 65 and 66, by throwing the switch arms 62, 67`or 68 'to contact with more o r less of the switch members so that the point at which a descending or returning car will give a signal may be readily adjusted. Thus, it will be seen that each of the switch members 62, 67 and 68 -will place more or less of the contact plates 19 to 39 inclusive in electrical connection with the conductor 70. lIf it is desired that each elevator give a starting signal immediately upon its descent, the switch members 62, 67 and' 68 will be thrown so as -to be in electrical connection with all of the switch members 56 to 61 inclusive, 65 and 66. On the'other hand, if it is'desired that the descending elevators only give a signal when they are opposite the second floor, the switch members 62, 67 and 68 will be thrown so that they only contact with switch member 56 and switch members 65 and 66, which are in electrical connection with the contact plates 31 and 38 respectively.

I will now describe my improved mechanism, by which the controlling circuits in each of the cars is controlled or regulated.

Referring to Fig. 2, the car 10 is shownA diagrammatically 0n a somewhat enlarged scale, both at the bottom and at the top of the shaft A. The car 10 is provided with the usual controller 72. lVheu the controller 72 is moved in the position shown at Z, the car moves upwardly when the controller is near the position shown at m, the car is stationary and when near the position `shown at n the car moves downwardly.

The controller 72 is provided with an electrical contact plate 73, which contact plate is arranged to electrically contact with the stationary contact plate 74 when moved to the downward position. -Contact plate 74 is electrically connected with the conductor 50. 75 indicates anlelectrical contact switch arranged to have 4 positions, as shown at w, iv, y and e. Switch 75 is arranged to contact in each position with two electrical contact plates, so that in covering vits four positions it will contact with eight electrical contact plates which 'plates are arranged in the form of a circle about the point 76, at

respectively. vThe cam blocks 84v and'85 .are

provided with camfaces 86, 87, 88 and 89,'as

shown. When the car l0 approaches 'the bottom of the .shaft A, or starting point, roller 83 engages cam surface 87, thus forcing the switch member 77 'about the pivot 78, so as to disengage theswitch member l77 from the switch contact 79. In a similar manner, when the car 10 moves u-pwardly the car moves upwardly it will be open, as

and approaches the top of the shaft A, the*- friction wheel 82 engages 'the cam surface 88, thus forcingtjhe switch memberA 77 rto rotate suiiiciently to bring it into electrical connection y with the switch lcontact '7 9.

'Ihus, when the car moves downwardly the circuit through switch :member 77 and switch contact 79 will be closed and when shown in the lower `part of Fig.f2. `If the I car l0should move` farther upwardly than is shown, the switch members .l 77 and 79 would be again separated by the action of the roller 83 andcam surface 88, thus opening the local controlling circuit. In a similarmanner, if the car l0 should pass below,Y

the position shown, the roller 82 would contact with cam surface 87 so as to electrically connect the switch members 77 and 79. It will .thus appear that whenever the car passes downwardly by one or the other of the blocks 84 or 85,- the switch members 77 and 79 will be connected, and when the car passes upwardly by either of said blocks, the switch members 77 and 79 will be separated. 'I he conductor 53 is electrically connected with the switch member 77.and also with conductors 90 and 91. The switch member 79 is connected with conductors 92 and,-93. lThe contact plate 73 is electrically connected with two'of the circularly arranged contact plates of the switch 75 bymeansof conductors 94 and the conductor 50 .is also electrically connected with two other of'said switch contact plates by means of conductors'95.

With the switch member 75'in the position'indicated by "w, the local controlling conductors 50 and 53 are connected as follows: Conductor .53, switch member 77,

switch member 79, conductor 92, switch member 75, conductor 94, controller contact plate 73, contact 74 and conductor 50. In this position it will therefore be seen that f both the switch 77 and the controller 72 act to open the controlling circuit when the elevator or-car moves upwardly and to close said circuit when it moves downwardly.

This arrangement gives two switches in the circuit and is preferable. If the car was moving downwardly from the top of the I shaft and before reaching the bottom desired to move upwardly again without operating the signals, this couldnot be done ify the could not be accomplished; .but by fbe opened thereby, lso that no signal can be given when the car is moving upwardlyor away from its starting point. In a similar manner, were the controller switch 72 only. in circuit and the car -havingmoved1 some distance upwardly then desired to return` a short distance without giving any signal, this having the switch members 77 and 79 in circuit, it will be apparent that no signal will be given upon such short returnmovement, since the circuit will be broken by the 'switch members 77 and 7 9. as valready described. It will therefore be apparent that where both of the switching devices 73 and 77 are in circuit, a

'much more satisfactory'arrangementv is had,

since the car may move back and forth to a considerable extent between the ends of its l path without giving a signal, but when it is really on its final return to the startin point, it will give the signal as desired. I

however, itI is not desired to utilize the' switch members 77 and 79 but only the'controller switch 73, the switch member7 5 will be moved to the position indicated by .V In this position the circuit is as follows: conductor 53, conductor 90, switch member 75, conductor 94, switch member 73, contact plate 74, to conductor 50. With this arrangement the controller 72 acts as the. sole means for controlling the circuit upon. 'each car. In case it is desired to use only the switch members 77 and 79 and eliminate the controller switch 73, the switch member 75 is moved to the position indicated by y, in which case the controlling circuit is as follows: conductor r53, switch member 77, switch member 79, conductor 93, switch member 75 and conductor 95. back to conductor 50.. In case of the failure of both switch members 77 andv 79 and the switch 73, the' controlling circuit may lbe permanently closed as follows by putting the switch member 75 in the position indicated by z. In this position the'local controlling circuit extends fromthe conductor 53 to the conductor 91,

switchmember 75 and conductor 95 back to the conductor 50. Under'these conditions the controlling circuit may be opened by a hand switch 100.

- From the above it will be apparent that I 'signal circuit is broken whenever any car departs from a starting position so that signalswill not be given needlessly andcon fusingly. By this arrangement the signals may be placed directly in the cars themselves, which could not be practically done in certain prior systems. By providing the series of contact plates corresponding to the diiferent floors or different positions along the route of travel and means whereby more or less of these may be electrically connected, vthe point at which a returning car will give a signal may be adjusted at will to suit any number of cars in operation. Furthermore, by providing a plurality of such contact plates and having them suitably spaced, the signal is given intermittently until the car signaled moves away from its starting position as desired. If, therefore, a car failed to Vobey the iirst signal the signal would be repeated substantially until obeyed. Furthermore, a car can only produce or operate a signal when in some mid position.

`The controlling circuit in either car is broken in the car .atthe starting point, as

will clearly appear from Fig. 1.

Vith my improved system any number of cars can be operated thereby and parts may beso adjusted that some may be runv to greater heights than others, and in this case it is only necessary to adjust the cam blocks 84: and 85 correspondingly. Even with these so adjusted, the elevators or cars may run beyond them withoutA any changebeing required. The cars when descending below the block 85, no matter what position it occupies, will, nevertheless, properly operate the signals when it passes below this block in its return passage.

Although I vhave described my improvements with respect to a particular embodi- Iment thereof and have shown the system diagrammatically in the drawings, nevertheless it will be apparent that many changes may readily be made well within the spirit and 4scope of my invention; For instance, the contact plates 19 to 39 inclusive might be arranged similarly on an independent switchboard, provided with switching .members for traveling thereover corresponding to the contacts 16 to 18 and 40 to 12 inclusive, which contacts would be operated by the elevators or cars through any suitable mechanism. In a similar manner the switching devices shown in Fig-2 may be modified to a large extent without departing from the spirit and scope of my invention.

However, having fully and clearly described my improvements, what I claim as new and desire to secure by Letters Patent 'of the United States, is:

1. The combination of a plurality of traveling cars, each having a starting position, starting signaling means for said ears, means operated by the movement of a car on its return toward Vits starting position but not by 'the movement of the car away from the starting position for causing the operation of the signaling means for any car at its starting position, and means for' 3. The combination of 'a plurality of traveling cars each having a starting position, starting signaling means for said cars, and means controlled by a car at successive points on its return toward its starting position, for causing the operation of the signaling means for another car, and causing the intermittent repeating of the signal as the returning car continues toward its starting position, the signaling means for a car being inoperative when the car is away from its starting position. y

4. The colnbination of a plurality of traveling cars each having a starting position, starting signaling means for said cars, and means controlled by the movement of any car toward itsstarting position but not by the movement of the car away from the starting position for causing the operation lic and causing the intermittent repeating of the signal as the returning car continues` toward its starting position. l

6. The combination of three or more traveling cars each having a starting position, a starting signal carried by each of said cars, means controlled by the movement -of any'car only toward its starting position for causing the operation of the signal for any car at its starting position, the signal being inoperative for any car when it is not atits starting position.

7. The combination of a plurality of traveling cars each having a starting position, starting signaling means for said cars,

means controlled lby a -car at successive points for starting the operation of the signaling means for another car and causing the intermittent repeating of the signal as thecar continues toward its. starting position.

8. The combination of a .plurality-.ofv

travelingoars, each having a starting position, starting signaling means for said cars, means controlled bythe movement of a car for causing the operation of the signaling means for any car at i'tsstarting position, and means for adjusting the point at which the car causes the operation of said signaling means of anothercar to start the latter.

9. The combination of a plurality of traveling cars-each having a starting position, means for controlli-ng the movement of i each car,` starting signaling means for said cars, and means controlled by the movement of a car ,for causing theoperation of the'siglnaling means for another car, said controlling means being operatively related to said last mentioned means whereby when the controlling means 1s operated to move a car i away from the starting position said last mentioned means on the car is rendered in.. operative to cause the operation of the signaling means for any car, said means controlled by the movement of a car embracing an electrical controlling circuit for a car,

Yswitching means operated by the movement of each car and switching means operated by the controller of each car.,

l0. The, combination of `a plurality of traveling 4cars each having a starting position, a signaling means Carried by each of said cars, and switching means for each car controlled by the movement of the car toward its starting position for causing the operation of the signaling means for any car at its starting position, said switching means `:for each car when the oar is at its starting position, being inoperative to cause the operation of the signaling4 means for any car. n

lli/The combination of La plurality o f traveling cars each having a starting position, starting signaling means for said cars, means for Yeach car controlled by the movement of the car Yfor causing the operation of the signaling means for any car at its starting position, and electrical switching means controlled by the movement of the car for rendering said controlled means, when its car is moving away from its starting position, inoperative to cause the operation lof said signaling means for any car, means for-v controlling the movement of each car, and

tion, starting signaling meansfor said cars,

anelectri'cal circuit for controlling the operation of the signaling means/for each car,- electrical switching Ameans for each .car controlled by the movement of the car for causing the operation of the signaling means for any car at'its starting position, and a second electrical switching meanscontrolled by the movement of the car for rendering the first mentioned switching means, when its carv is movingaway from its starting position,

inoperative to cause the operation of said aoA traveling carseach having a starting position, starting signaling means forsaid cars, an electrical circuit for controlling the operation of the signaling means for each car, electrical switching means for each car controlled by the movement of the car for causing the operation of thesignaling means for any car at its starting position, and a second electrical switching means controlled by the movement of the car for rendering the irst mentioned switching means, vwhen its car is moving away from its starting position, in operative to cause the operation of said signaling Ameans for any car, a controller for each car, switching means oneach car controlledby the controller, for rendering said iirst mentioned switching means, when its car is moving away from its starting position, inoperative to cause the operation of said signaling means for any car, and meansf whereby either or both of said second and third mentionedv switching means may be thrown out of operation.

14. rl-he combination of a plurality of traveling cars each having a starting position, electric signaling means for said cars, said signaling means being inoperative for any ca r while away from its starting position, switching means controlled by the movement of any car returning to its starting position for causing the operation kof the signaling means for any car at its starting position, and switching means automatically controlled for preventing said lirst mentioned switching means from causing the operation of the signaling means when its car is moving away from its starting position. c

l5. The combination of a plurality of traveling cars each having a starting position, electric signaling meansV for said cars, said signaling means being inoperative for any car while away fromits starting position, switching means controlled 4by the movement of any car returning to its starting position Afor causing the operation of the signaling means for any car at its starting position, and switching means automatically controlled for preventing said 'first mentioned switching means from causing the operation of the signaling means when its car is moving away from its starting position, said first mentioned switching means having a plurality of contacts for causing the intermittent repeating of the signaling means.

16. The combination of a plurality of traveling cars each having a starting position, electric signaling means for said cars,

said signalingV means being inoperative for any car while away from its starting position, switching means controlled by the movement of any car returning to its starting position for causing the operation of the signaling means for any car at its starting position, and switching means automatically controlled for preventing said first mentioned switching means from causing the operation of the s ignaling means when its car is moving away from its starting position, and means for adjusting the point at which a returning car causes the operation of said signaling means.

1T. The combination of a plurality of traveling cars, each having a starting position, electric signaling means for said cars, said signaling means being inoperative for any car while away from its starting position, switching means controlled by the movement of any car returning to its starting position for causing the operation of the signaling means for any car at its starting position, and switching means automatically controlled for preventing said first mentioned switching means from causing the operation of the signaling means when its car is moving away from its starting position, and means for adjusting the point at which a returning car causes the operation of said signaling means, said first mentioned switching means having a plurality of contacts for causing the intermittent repeating of the signaling means.

1S. The combination of a plurality 'of' traveling cars each having a starting position, electric signaling means for said cars, said signaling means being inoperative for any car while away from its starting position, switching means` controlled by the movement of any car returning to its starting position for causing the operation of the signaling means for any car at its starting position, and switching means automatically controlled for prevent-ing said irst mentioned switching means Jfrom causing the operation of the signaling means when its car is moving away from its starting position, and a controller for kcontrolling the movement of each car, said last mentioned switching means being controlled by the controllerot` its car.

19. The combination of three or more ing means having a plurality of contacts for' causing the intermittent repeating .of the signaling means, and means for ad]usting the point at which a returning car starts the 'operation of said signaling means, and a controller for controlling the movement of each car, said last mentioned switching means being controlled by the controller of its car. v

Q0. The combination of a plurality of traveling cars each having a starting position, an electric signal for each car, the signal for any car being inoperative when the car is away from its starting position, switching means operated by the movement on its return to its starting position l*for causing the operation of the signal of any car at its starting position, and switching means automatically controlled for preventing a car, when moving away from its starting position, from causing the operation of the signal 'of any car at the starting position.

2l. The combination of a plurality' of traveling cars each having a starting position, signaling means for said cars comprising an electrical circuit for each car, switching means for closing -the circuit of a car at one point when the car is at itsA starting position, and opening the circuit at said point when the car is at other positions, switching means for closing the circuit of a car at another point and controlled by another car when it is returning to its starting position, and switching means for automatically opening the 'circuit at another point when said other car'is moving away from its starting position.

22. In a signaling system, a plurality. of traveling cars, each having a starting position, a starting signal for each car, and means operated by a car returning to its starting position for operating the starting signal for any car at its starting position and -for repeating said signal only while the car is returning to its starting position, and the carat its starting position lremains at its starting position.

Q3. In la signaling system, a plurality of traveling cars, each having a starting position, starting signaling means for said cars, and means-operated by a cary returning to its startingposition for operating the starting signal for any car at its starting position and for repeating said signal, only While the car at its starting position remains'- tion, starting signaling'means for said cars,

and means operated at successive points by .a car returning to its starting position for operating the starting signalfor any car at its starting position. and for repeating said signal While the car is returning to its start-- ing position.,

25. Ina signaling system, a plurality of travelingcars, each having a starting position, starting signaling means for said cars, and means operated by a car returning toits rStarting position for operating the starting signal for any car at its starting position and for repeating said signal only While lthe car vis returning toits starting position.

26. In signaling system, a plurality. of traveling cars, each having' astarting posi'- tion, a starting signal carried by each car, means operated at successive points by a car returning to` its starting position for intermittently operating the signal of anycar at v its starting position, .the signal of each car being inoperative when the car moves a-ivay from its starting position. Y. y l

27. Ina signaling system7 a plurality of traveling cars, each having a starting posi tion, starting signaling means for said cars,

and means only controlled by any car returning'to its starting position for operating said signaling means for starting anycar at its starting position and for continuing the operation of said signaling means only until said returning car substantially reachesfits starting position. i s

28. In a signaling system, a plurality of traveling cars, each having a starting position, starting signaling means for said cars, and means controlled by any car returning to its startingfposition for operating said signaling means for startingany car at its starting position and for continuing the operation ot' said signaling. means until said return-ing .car substantially reaches its starting position, the signaling meansr being ins `operative for any car ivhen; it niovesaivay from its starting position.

29. In a signaling system, a plurality of traveling cars.y starting signaling means for said cars, and means whereby each car during a material portion of its descent will cause'the actuation of the signal for any` car at one end of its line oftravel,r said means being arranged to operate said signal only until the car signaled has started upwardly.

30. In a signaling system, a plurality of traveling cars, each having a starting position, a starting signal for' each car and position and repeat said signal until the remeans vcontrolled by a car at successive points While the car is returning tothe starting position for 'causing the operation of the starting signal for any car at the starting vand means controlled by the movement of any car at successive points for causing the intermittently repeated operation of the signaling meansfor .another car until the latter car obeys the signaling.' l

32. The combination of a plurality oi"- traveling cars, signaling means forsaid cars, means -controlled by the movement of any car for causing the operation of "he signaling means for another car, and .electrical switching means for adjusting the Apoint in its travel at which said first mentioned car startstlie operation of the signaling means. 33. In a signaling system, the combination ot' a plurality of traveling cars, each having astaiti'ng position. a starting signal for each car, an electric signalcircuit for each signal.l means whereby each signal `circuit' is closed at one point when the car is atits starting positionfwmeans ivhereby each signal circuit .is closed at a plurality of points by the resignaling circuit is closed Aby the return of a I cai' to the starting position.

8l. Ina signaling system, the combination of a plurality oi'." traveling cars.I each having a starting position, a starting signal foreach car, an electric signal circuit foreach car arranged to be opened and closedv by the movement of' the same, .and switch means vactuated by the movement of the car for v causing the circuit to be open during travel `away from the starting position and closed during travel toward. the starting position, ai controller for each oar. and a switch actu- Vated by the controller for causing the controlling circuit to be open at one point during travel away from thestarting position and closed at that point during travel toward the starting posit-ion.

35. In. a 'signaling system, tliecombination (ifa-plurality of traveling cars. each having` a starting-position, a. starting signal for each car, an electric signal circuit for each car.

arranged to'be opened and closed by the moven'ient ofthe same, and a sivitch actuing the circuit to be open during travel away from the starting position and closed during ated by the movement of the car for causi by the controller 'for causing the circuit'to be open during travel away from the starting the operation of the signaling means during certain sta ges of the operation. y,

3T; In a signaling system, the combination of a plurality of traveling cars, each having a starting position, a starting signal for each car, a controlling circuit for each carto control the operation or the signals, a controller for regulating the operation of each car and means whereby said circuit is controlled by said controller.

3S. In a signaling system, the combination of a plurality of traveling cars, each having a starting position, a starting signal for each car, a controlling circuit for each car for controlling .the operation of the signals, means whereby only a return movement of the car regulates the'action of said circuit to operate the signals and a hand switch on each car for opening or closing said controlling circuit for another car.

39. The combination of a plurality of traveling cars, signaling means for said cars, means controlled only by a return movement of any car for causing the operation of the signaling means for another car, and a hand operated means in each for preventing it from causing the operation of said signaling means.

40. In a signaling system, the combination of a plurality of traveling ears, each having a starting position, a starting signal for each car, and means whereby a car returning to its starting position will start the operation of the starting signal of any car at its starting position, at a predetermined point in the travel of the returning car and cause the operation of said starting signal during further travel of the car to its starting position.

41. In a signaling system, the combination of a plurality of traveling cars, each having a starting position, a starting signal for each car and means whereby a car returning to its starting position will cause the operation of the starting signal of any car at its starting position, at a predetermined point in the -travel of the returning car and means whereby said prdetermined point may b e adjusted to correspond to any floor or station at which the cars are designed to stop.

43. In a signaling system, a plurality of. traveling cars, each having 'a starting position, a starting signal for each car and means whereby a car returning to the starting position will cause the operation of the starting signal for any car at the starting position and repeat said signal until the returning car has substantially 'reached its starting position and means whereby said predetermmed point may be adjusted to correspond to any floor or station at which the cars are designed to stop.

44. yThe combination of a plurality Iof traveling cars each having a starting position, starting signaling means for said cars, means controlled by 4the movement of any car toward its starting position b ut not lby the movement of the car away from its starting position for causing the operation of the signaling means for any car atits starting position, the signaling means being inoperative for any car when it is not at` its starting position, and means for adjusting the point at which the returning car-causes the operation of the signaling means.

45. The combination of a plurality of traveling cars each having a starting position, starting signaling means for said cars, means controlled by the movement of a car on its return toward its starting position for causing the operation of the signaling means for another car, and electrical switching means external to and independent of the car for adjusting the point at .which the returning car causes the operation of said signaling means.

Signed at New York city, in the county of New York and State of New York this 11th day of July, A. D. 1910.

GORI-IAM CROSBY.

Witnesses:

JOHN W. JEPsoN, EDWIN SEGER. 

